The programme of ECF National Events for 2021 is as per the list below. This is draft version 0.1 of the list. Please follow this page for any updates to events or dates on the schedule.
| Start Date | End Date | Tournament | Stage | Platform | Time Control |
| Sunday 7 March | ECF Online Blitz Grand Prix |
Event 1 | Lichess | Blitz | |
| Saturday 13 March | English Online Schools U19 Championships |
Team Swiss | Chess.com | Rapid | |
| Sunday 14 March | English Online Bullet Championship | Swiss+KO | Lichess | Bullet | |
| Saturday 20 March | English Online Schools U11 Championships |
Team Swiss | Chess.com | Rapid | |
| Sunday 21 March | ECF Online Rapid Grand Prix |
Event 1 | Lichess | Rapid | |
| Sunday 4 April | ECF Online Blitz Grand Prix |
Event 2 | Lichess | Blitz | |
| Sunday 18 April | ECF Online Rapid Grand Prix |
Event 2 | Lichess | Rapid | |
| Sunday 2 May | ECF Online Blitz Grand Prix |
Event 3 | Lichess | Blitz | |
| Saturday 8 May | Sunday 9 May | ECF Online Charity Marathon | Arena | Chess.com | Blitz |
| Sunday 16 May | ECF Online Rapid Grand Prix |
Event 3 | Lichess | Rapid | |
| Saturday 22 May | Sunday 23 May | English Online Blitz Championship | Swiss+KO | Lichess | Blitz |
| Saturday 5 June | English Online County Championship | Matchday 1 | Chess.com | Standard | |
| Sunday 6 June | ECF Online Blitz Grand Prix |
Event 4 | Lichess | Blitz | |
| Saturday 12 June | English Online County Championship | Matchday 2 | Chess.com | Standard | |
| Sunday 20 June | ECF Online Rapid Grand Prix |
Event 4 | Lichess | Rapid | |
| Saturday 19 June | English Online County Championship | Matchday 3 | Chess.com | Standard | |
| Friday 25 June | Sunday 27 June | National Online Clubs Championship | Swiss | Lichess | Standard |
| Saturday 26 June | English Online County Championship | Matchday 4 | Chess.com | Standard | |
| Saturday 3 July | English Online County Championship | Matchday 5 | Chess.com | Standard | |
| Sunday 4 July | ECF Online Blitz Grand Prix |
Event 5 | Lichess | Blitz | |
| Saturday 10 July | ECF Online County Championship | Matchday 6 | Chess.com | Standard | |
| Sunday 18 July | ECF Online Rapid Grand Prix |
Event 5 | Lichess | Rapid | |
| Saturday 17 July | English Online County Championship | Matchday 7 | Chess.com | Standard | |
| Monday 19 July | Friday 23 July | Online Glorney Cup | Team RR | Chess.com | TBC |
| Saturday 24 July | Sunday 8 August | British Online Championship | Quali+Final | Chess.com | TBC |
| Sunday 1 August | ECF Online Blitz Grand Prix |
Event 6 | Lichess | Blitz | |
| Sunday 15 August | ECF Online Rapid Grand Prix |
Event 6 | Lichess | Rapid | |
| Saturday 14 August | English Online County Championship | Matchday 8 | Chess.com | Standard | |
| Saturday 21 August | ECF Online County Championship and National 1400 | Matchday 9 | Chess.com | Standard | |
| Saturday 28 August | English Online County Championship and National 1400 | Matchday 10 | Chess.com | Standard | |
| Saturday 4 September | North v South | Team Match | Chess.com | Standard | |
| Sunday 5 September | ECF Online Blitz Grand Prix |
Event 7 | Lichess | Blitz | |
| Sunday 19 September | ECF Online Rapid Grand Prix |
Event 7 | Lichess | Rapid | |
| Sunday 3 October | ECF Online Blitz Grand Prix |
Event 8 | Lichess | Blitz | |
| Sunday 17 October | ECF Online Rapid Grand Prix |
Event 8 | Lichess | Rapid | |
| Saturday 16 October | Sunday 17 October | English Online Rapid Championship | Swiss | Lichess | Rapid |
| Saturday 23 October | Sunday 24 October | English Online Rapid Championship | KO | Lichess | Rapid |
| Sunday 7 November | ECF Online Blitz Grand Prix |
Event 9 | Lichess | Blitz | |
| Saturday 20 November | English Online County Under 18 Championship | Team Swiss | Chess.com | Rapid | |
| Sunday 21 November | ECF Online Rapid Grand Prix |
Event 9 | Lichess | Rapid |